break std::shared_ptr<MyType>::shared_ptr(const std::shared_ptr<MyType>&)
    commands
      silent
      printf "shared_ptr_leaks: alloc %p\n", this
      bt 5
      printf "shared_ptr_leaks: end\n"
      continue
    end
    break std::shared_ptr<MyType>::~shared_ptr()
    commands
      silent
      printf "shared_ptr_leaks: free %p\n", this
      continue
    end